Wedge for a stator of a generator with preformed coil windings

Abstract

A wedge for a stator of a generator with preformed coil windings includes a retaining portion for retaining coil windings. The retaining portion covers at least part of two neighbouring stator slots. A mounting projection at a bottom surface of the retaining portion for mounting the wedge to a top surface of a stator tooth is located between the two neighbouring stator slots.

The invention claimed is: 
     
       1. A stator of a generator with preformed coil windings, comprising:
 stator slots and stator teeth, wherein one stator tooth is arranged between two neighbouring stator slots, and 
 a wedge, the wedge comprising:
 a retaining portion for retaining coil windings, wherein the retaining portion covers at least part of two neighbouring stator slots, and 
 a mounting projection at a bottom surface of the retaining portion located between the two neighbouring stator slots for mounting the wedge to a top surface of a stator tooth located between the two neighbouring stator slots, 
 
 wherein the wedge is laminated, 
 wherein the wedge and the stator comprise the same ferromagnetic material, 
 wherein the wedge and the stator comprise the same laminated structure, and 
 wherein the thickness of the laminations of the wedge is the same as the stator laminations. 
 
     
     
       2. The stator according to  claim 1 , wherein the retaining portion wherein the retaining portion covers half of each of the two neighbouring stator slots. 
     
     
       3. The stator according to  claim 1 , further comprising:
 a plurality of sections in a longitudinal direction, wherein the sections are spaced apart from each other by a spacer. 
 
     
     
       4. The stator according to  claim 1 ,
 wherein edges of the retaining portion comprise a structure optimized for electromagnetic fields. 
 
     
     
       5. The stator according to  claim 1 ,
 wherein the retaining portion has a curved upper surface. 
 
     
     
       6. The stator of a generator according to  claim 1 ,
 wherein a recess is provided in a top surface of a stator tooth. 
 
     
     
       7. The stator according to  claim 1 ,
 wherein the laminations of the wedge are glued together.